Hose ferrule clamping machine



9- R. w. MILLER I HOSE FERRULE CLAMPING MACHINE 7 Filed Sept. 5, 1946 .17; ROBERT W M/LLER.

ATTORNEY.

Patented Oct. 4, 1949 UNITED STATES PATENT OFFICE. I t w 2,483,659 I nosn FERRUPE oLAMrrNGMAon'INE Robert W. MillenDenvenlColo. I Application-September a, 1946, Serial No. 694',629 i lfilai m. (crass-1) This invention relates toa tool for contracting V or clamping metal ferrules on the extremities of lengths of rubber hose for securing couplings and fittings therein. The principal object of the invention resides in its simplicity and efficiency.

Another object .of theinvention is to provide a small, light-weight tool with but a singlemoving part which will impart uniform pressure'to the entire circumference of the ferrule so as to contract it uniformly throughout the entire circumference. 1

Other objects and advantages reside in the detail contruction of the invention, which is designed for simplicity, economy, and efficiency. These will become more apparent from the following description.

In the following detailed description of the invention, reference is had to the accompanying drawing which forms a part hereof. Like numerals refer to like parts in all views of the drawing and throughout the description.

In the drawing.

Figs. 1 and 2 are perspective views, looking toward the front and back, respectively, of the improved tool;

Fig. 3 illustrates a typical metal ferrule as used for securing hose couplings;

Fig. 4 illustrates the same ferrule as it would appear after being contracted by this invention;

Fig. 5 illustrates a wire structure as used in the improved tool for the contracting operation; and

Fig. 6 is a detail section taken on the line 645, Fig. 1.

In Figs. 3 and 4 the extremity of a length of hose is illustrated at Ill, with a conventional coupling ll inserted therein, and a typical brass errule is illustrated at E2. The coupling H fits snugly into the extremity of the hose I0, and the ferrule 92 fits snugly over the extremity of the hose H].

To look the coupling H to the hose I0 it is necessary to contract the ferrule 12 on the hose. This is usually done by means of elaborate machinery at the factory where the hose is manufactured. The factory machines are provided with a plurality of clamping dogs which move radially against the coupling to contract it on the hose. These dogs do not give a uniform contracting action around the entire circumferential surface of the ferrule, and the machines are too cumbersome and too expensive for the average user. This improved ferrule contracting tool is a light-weight hand tool which will give uniform contracting action around the entire circumference of the ferrule.

' The improved tool'comprises an inverted, channel shaped. basemember l3 formed of a single length of stamped metal plate and provided with two oppositely extending integral base flanges M.- The base member i3 is slotted, as shown at l5, adjacent one of its: extremities for therece'ption of the iower extremity of a handle l6. The flanges l imay'be provided with screw holes 3U, lay-means ofwhi'chthey may be attached to a "work bench orothersupport. r

' The handle 56* is also preferably formed of metal plate bent to form a U-shaped channel.

The handle is hinged to'thebase member 13 on a suitable hinge pin or screw ll. A U-shaped removable attachment clip is is secured to the handle it by means of suitable attachment screws The actual contracting of the ferrule is accomplished by means of a single length of high tensile strength steel wire 26 such as piano wire. The length of wire as is bent back upon itself, as shown in Fig. 5, to form a double strand. The two extremities are brazed or otherwise secured together, as shown at 2!. Adjacent the point of attachment 2! the wire extremities are bent oppositely outward to form a screw loop 22. A U-shaped friction sleeve 23 is placed about the wire at the bent extremity thereof, as shown in Fig. 5.

In attaching the wire 29 to the tool, the sleeve 23 is clamped in place on the handle it by means of the attachment clip H8. The wire is then rolled back upon itself to form an open, circular loop 24. The screw loop 22 is then clamped to the base member l3 by means of a suitable clamp screw 25.

It will be noted that the attached-together extremities of the wire are passed between the portions leading to the sleeve 23 to maintain the two portions of the wire close together throughout the loop 24.

A guide tab 26 is turned upwardly from the metal stamped from the slot l5. This tab is rolled back on itself to form a tubular holder for a guide pin 21. The guide pin serves to hold the two lengths of wire 20 in two guide slots 28 formed in the tab 25.

In use, the extremity of the hose with the nipple l l and ferrule H2 in place thereon is placed in the loop 24, as shown in broken line Fig. 2. The handle is then swung downwardly, as indicated by the arrow A, Fig. 2. This provides a leverage which draws upon the bent extremity of the wire to apply tension thereto which contracts the loop 24 around the ferrule l2 with sufficient force to form an annular, deeply indented groove 29 therein which permanently locks the ferrule in place upon the hose.

It will be noted there is only one moving part, the handle l6, unless the wire be considered a moving part. It will also be noted that the wire contracts about the ferrule with uniform pressure at all points of the circumference. Should the wire Wear out or break, it is only necessary to remove the screws l9 and 25 and the pin 21 to replace it with a new wire formed as shown in Fig.

While a specific form of the improvement has been described and illustrated herein, it is desired to be understood that the same may be varied, within the scope of the appended claim,-with0ut departing from the spirit of the invention.

Having thus described the invention, what is claimed and desired secured, by Letters Patent is:

A hose ferrule clamping device comprising an elongated inverted, channel-shaped base member,

said base member having an opening in its top adjacent one of its extremities; a clamp screw in the top of said base'member adjacent its other extremity; an elongated handle extending at its lower extremity into said opening; a hinge pin extending through the sides of said base member and through the lower extremity of said handle to form a hinge pivot for said handle; a guide tab extending upwardlyirom said base member between said handle and said clamp screw and provided with two guide slots in its upper edge; two adjacent lengths of flexible wire extending from said clamp screw through said guide slots to said handle; means securing said lengths of wire to said handle above said hinge pin, said Wires being bent to form an open loop between said clamp screw and said guide tab; the diameter of said loop varying in consequence of the movement of said handle about its hinge pin; and a pin extending through said guide tab transversely of said base member and over said lengths of wire and acting to retain the latter in said guide slots.

ROBERT W. MILLER.

REFERENCES CITED The followingreferences are of record in the file 'of this patent:

UNITED STATES PATENTS 

